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Social media can be a great way to share your cave diving experiences with others. It can also be an effective tool for promoting classes, trips and other activities — even if those activities do not involve cavern or cave diving. Unfortunately, most of the cave diving photos and, especially, video we see posted on Facebook, You Tube and Instagram pretty much suck. Which is a shame because they don’t have to.

If you are going to post diving advice on Facebook, you might want to take the time to check your facts and think things all the way through. Case in point: A person I know recently responded to a thread that had nothing to do with gas sharing by saying, “Most PADI divers use that AIR2 crap.” He later justified his position by posting this:

Most dive instructors would agree that it is far harder to break bad habits than it is to never allow those habits to form in the first place. It’s why we are so adamant about students not putting masks on foreheads or leaving tanks standing upright unattended. Yet, despite this, most instructors allow students to form four of the worst possible habits just by continuing to teach “the way we’ve always done it.” Some divers manage to break these habits with time; many never do.

Does this sound familiar? “The Open Water Diver course is designed to prepare students to plan and make no-decompression dives with a qualified buddy — independent of supervision — in conditions similar to those in which they were trained.” Odds are this statement, or one very much like it, will be the first paragraph that appears in your Instructor Manual under Open Water Diver Course. And I’m here to tell you it’s bullshit.

People often ask me where I get my material. It’s really very simple. I just go to a local open water dive site (any site will do) and wait ten minutes. What I will see during those ten minutes will be more than enough for a lengthy article. Today was no exception.

The most counterproductive word in diver training is the one instructors use to justify not making learning to dive more realistic, more relevant and more effective. That word is should — along with its siblings should not and shouldn’t. These words have done more to stifle meaningful change in diver training than any others in the English language. What do we mean by this? Here is an example.

The “standard” flutter kick taught in Open Water Diver courses is one cave divers simply don’t use. Instead, they have a repertoire of propulsion techniques that allows them to choose the right technique for each situation. These techniques not only allow cave divers to move efficiently, they help divers avoid silting out the cave or damaging fragile formations. It is for this reason that every diver should learn these techniques, to help protect fragile coral and aquatic life as well, and keep the visibility pristine for others.

What is the correct way to attach a snorkel while scuba diving? Is it to put it on the left? On the right? Far forward on the mask strap? Farther back? Well, for most scuba divers, the correct answer is none of the above. To understand why, you first need to know a little bit about the history of snorkels and scuba diving — and about some very real drawbacks snorkels have that training agencies seem unwilling to acknowledge.

An article in a recent edition of DAN’s Alert Diver magazine warns of the perils of diving with an isolator valve you only think is open (link below). While your SPG may be telling you that you have phenomenal gas consumption, the reality is that you are sucking the right side of your doubles dry and may soon run out of air without warning. This story hit close to home for me, as I’ve witnessed this same situation twice…and experienced it once.

Odds are, if you have been cave diving — or just following cave diving — for any length of time, you’ve come across a video showing fellow cave diving instructor Max Kuznetsov tackling among the tightest of all cave passageways, the infamous “Fluffy Bunny Tunnel.” It’s available on Vimeo and it’s a great video to share if you want to absolutely horrify your non-cave-diving friends.